package com.dly.blog.utile;

import com.dly.blog.security.UserAuth;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;

import java.util.Objects;

/**
 * 安全服务工具类
 *
 * @author ruoyi
 */
public class SecurityUtils {

    /**
     * 用户ID
     **/
    public static String getUserId() {
        if(Objects.isNull(getLoginUser())){
            return null;
        }
        return getLoginUser().getId();
    }


    /**
     * 获取用户账户
     **/
    public static String getUsername() {
        if(Objects.isNull(getLoginUser())){
            return null;
        }
        return getLoginUser().getUsername();
    }

    /**
     * 获取用户
     **/
    public static UserAuth getLoginUser() {
        /**
         * 如果是登入用户返回登入用户
         */
        if(getAuthentication() instanceof UserAuth userAuth){
            return userAuth;
        }
        return null;
    }

    /**
     * 获取Authentication
     */
    public static Object getAuthentication() {
        if (Objects.isNull(SecurityContextHolder.getContext().getAuthentication())){
            return null;
        }
        return SecurityContextHolder.getContext().getAuthentication().getPrincipal();
    }

    /**
     * 生成BCryptPasswordEncoder密码
     *
     * @param password 密码
     * @return 加密字符串
     */
    public static String encryptPassword(String password) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.encode(password);
    }

    /**
     * 判断密码是否相同
     *
     * @param rawPassword     真实密码
     * @param encodedPassword 加密后字符
     * @return 结果
     */
    public static boolean matchesPassword(String rawPassword, String encodedPassword) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.matches(rawPassword, encodedPassword);
    }

    /**
     * 是否为管理员
     *
     * @param userId 用户ID
     * @return 结果
     */
    public static boolean isAdmin(Long userId) {
        return userId != null && 1L == userId;
    }
}
